McOuay International has selected dual-circuited brazed heat exchangers for their new re-designed AGZ26 70 ton air-cooled chillers. Alfa Laval's AC250DO brazed heat exchangers will replace shell-and-tube heat exchangers as evaporators in the air-cooled chiller series. This will result in a 10% savings in heat exchanger costs and a reduced cost for the chiller unit.